Engine-Codes - Buick - P1300 Buick

P1300 Buick Code - Ignition Coil 1 Primary Feedback Circuit

- Code Popularity: 3,643 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1300 Buick?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Ignition Coil 1
  • Ignition Coil 1 harness is open or shorted
  • Ignition Coil 1 circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)
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How to Fix the DTC P1300 Buick?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1300 Buick code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P1300 Buick Code Mean?

The Diagnostic Trouble Code (DTC) Ignition Coil Primary Feedback Circuit monitors the primary circuitry of individual ignition coils for successful completion of an ignition event. The ignition trigger signal and ignition fail-safe input signal provide crucial information in the control of ignition system timing and activation of the fail-safe function. Based on the initial timing angle, calculated from the crankshaft and the camshaft position signals, Powertrain Control Module (PCM) calculates the ignition trigger signal. The ignition trigger signal is then sent to the ignition control circuitry located in each ignition coil. Ignition control circuitry initiates the ignition dwell period by commanding the power transistor ON. When PCM determines the proper time to provide a spark, the PCM turns OFF the ignition trigger signal. In response to the PCM signal, the ignition coil control circuitry turns OFF the power transistor, producing a high voltage discharge from secondary coil windings. After a spark has occurred, the control circuitry sends an ignition fail-safe input signal back to the PCM, confirming that an ignition event has taken place. If the ignition fail-safe input signal is not received by the PCM, a cylinder-specific DTC will be set.
Anytime the fail-safe input signal is lost, engine operation will enter the fail-safe function. If engine load exceeds certain parameters during fail-safe function, FUEL CUT-OFF mode is activated, and fuel injector operation is ceased. The suspension of fuel injection in FUEL CUT-OFF mode protects the catalytic converter from damage. Damage can occur when excess unburned fuel reaches the converter and causes the catalyst to overheat.
P1300 Buick Code - Ignition Coil 1 Primary Feedback Circuit

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